Vacuum cleaner



FIG. 1 is a front perspective view of a vacuum cleaner showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left-side elevation view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an exploded bottom perspective view thereof showing additional environment that forms no part of the claimed design.

The details shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a vacuum cleaner, as shown and described. 